document.write( "Question 674557: The velocity v (in feet per second) of an object dropped from tall building after falling d feet is given by the mathematical model v = . What is the velocity of an object that has fallen 121 feet? \n" ); document.write( "

Algebra.Com's Answer #419329 by Alan3354(69443) $\"\"$ $\"About$

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The velocity v (in feet per second) of an object dropped from tall building after falling d feet is given by the mathematical model v = . What is the velocity of an object that has fallen 121 feet?
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\n" ); document.write( "v = a*t where a is gravitational acceleration ~ 32 ft/sec/sec
\n" ); document.write( "s = at^2/2 (s = distance in ft)
\n" ); document.write( " $\"t+=+sqrt%282s%2Fa%29\"$
\n" ); document.write( " $\"v+=+at+=+32sqrt%282s%2F32%29\"$
\n" ); document.write( " $\"v+=+32%2Asqrt%28121%2F16%29+=+32%2A11%2F4\"$
\n" ); document.write( "v = 88 ft/sec
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